cbs news reporter erica ferrari joins us live from newtown with more on president obama's appearance at a public memorial and it was obviously, a very emotional sad day as he spoke yesterday. >> reporter: behind closed doors, the president told connecticut's governor that friday was the single most difficult day of his presidency. >> reporter: charlotte, daniel, olivia... >> reporter: the tears flowed freely as the people of newtown, connecticut remembered those gunned down at sandy hook elementary school. >> we gather here in memory of 20 beautiful children and six remarkable adults. >> reporter: president obama said he brought with him the love and prayers of the nation. >> i am very mindful that mere words cannot match the depths of your sorrow nor can they heal your wounded hearts. >> reporter: the next painful step in the grieving process begins today when the first two funerals will be held here in newtown. >> they were innocent babies and that's what makes it almost incomprehensible. >> reporter: police believe the carnage could have been much worse. they say 20-year-old adam